Key blank



FIG. 1 is a perspective view of a key blank, showing a first embodiment of my new design;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a right-side elevational view of FIG. 1;

FIG. 5 is a left-side elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1;

FIG. 7 is a bottom plan view of FIG. 1;

FIG. 8 is a perspective view of a second embodiment thereof;

FIG. 9 is a front elevational view of FIG. 8;

FIG. 10 is a rear elevational view of FIG. 8;

FIG. 11 is a right-side elevational view of FIG. 8;

FIG. 12 is a left-side elevational view of FIG. 8;

FIG. 13 is a top plan view of FIG. 8; and,

FIG. 14 is a bottom plan view of FIG. 8.

The broken lines showing a lateral groove in the key blank in FIGS. 1, 5, 8 and 12 depict environmental matter and form no part of the claimed design. 

CLAIM I claim the ornamental design for a key blank, as shown and described. 